Whether youre on your commute or walking across the corporate campus the securetrek 156 laptop carrying case not only protects your laptop from damage it offers an anti theft security system safeguard your bags contents by clicking the hammerhead zipper pulls into the patent pending securetrek lock base then add a kensington lock to secure it to a fixed object or you can use a tsa approved luggage lock when flying protected by durable poly twill material your laptop and tablet stow in pa